diff options
| author | Benjamin Tissoires <bentiss@kernel.org> | 2024-07-23 19:21:54 +0300 |
|---|---|---|
| committer | Benjamin Tissoires <bentiss@kernel.org> | 2024-07-24 19:27:22 +0300 |
| commit | facdbdfe0e6202d74758387ae9189c39f7b4b16c (patch) | |
| tree | 6f99efe47551af6644b5f81d5b9e6ea54bf9c7bf /tools/testing/selftests/hid | |
| parent | acd34cfc48b3dd46e5e4c4bdc99cc0c15568bac0 (diff) | |
| download | linux-facdbdfe0e6202d74758387ae9189c39f7b4b16c.tar.xz | |
selftests/hid: add test for attaching multiple time the same struct_ops
Turns out that we would en up in a bad state if we attempt to attach
twice the same HID-BPF struct_ops, so have a test for it.
Link: https://patch.msgid.link/20240723-fix-6-11-bpf-v1-4-b9d770346784@kernel.org
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'tools/testing/selftests/hid')
| -rw-r--r-- | tools/testing/selftests/hid/hid_bpf.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index 9c935fd0dffc..75b7b4ef6cfa 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -695,6 +695,24 @@ TEST_F(hid_bpf, subprog_raw_event) } /* + * Attach hid_first_event to the given uhid device, + * attempt at re-attaching it, we should not lock and + * return an invalid struct bpf_link + */ +TEST_F(hid_bpf, multiple_attach) +{ + const struct test_program progs[] = { + { .name = "hid_first_event" }, + }; + struct bpf_link *link; + + LOAD_PROGRAMS(progs); + + link = bpf_map__attach_struct_ops(self->skel->maps.first_event); + ASSERT_NULL(link) TH_LOG("unexpected return value when re-attaching the struct_ops"); +} + +/* * Ensures that we can attach/detach programs */ TEST_F(hid_bpf, test_attach_detach) |